TY  - BOOK
T1  - Rule-labeled programs a study of a generalization of con ext-free grammars and some classes of formal languages.
T2  - Wiley series in computing
A1  - Leeuwen, Jan Van
LA  - English
PP  - Chichester
PB  - John Wiley and Sons
YR  - 1980
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217607797645
OP  - 321
CN  - QA76.5 L436 1972
SN  - 0471276340
KW  - Programming Languages.
KW  - Computers -- Reliability.
ER  -